The closest memory implementation would be the default one. The other implementations that try to do their own pool management are unacceptable as memory system wide to too valuable to allow SQLite to allocate pool that it is not currently using. I am also fundamentally opposed to trying to outsmart the memory manager until someone can demonstrate a need to do so. I have yet to see a successful effort to do this in my environment.
Back to the default implementation, the trouble is that there is too much heavy synchronization and it prevents me from using available high performance memory management primitives and available debugging support. Performance and space are critical factors. I'm working in the NT system it would be unreasonable of me to expect that any of your implementations to be well suited to that environment. That's why I found the SQLITE_OMIT_MEMORY_ALLOCATION exciting. I was fully expecting from the beginning that this would be an area that I would have to implement just like the VFS and mutex support. The difference is that now I have to make a few changes to the amalgamated source to do it rather than just #define a value. No problem. Thanks for your help. [EMAIL PROTECTED] wrote: > Mark Spiegel <[EMAIL PROTECTED]> wrote: > >> I'm looking to jump my code port forward from 3.5.1 to 3.5.7. >> >> Clearly I have some memory management work to do since >> SQLITE_OMIT_MEMORY_ALLOCATION support has been dropped. None of the >> existing allocation implementations look acceptable so I'll have to roll >> my own, >> > > What do you need that none of mem[12345].c provide? > > >> but that looks pretty straight forward. >> >> Two questions: >> >> 1) Has the VFS interface changed from 3.5.1 to 3.5.7? >> > > No. > > >> 2) Is the SQLITE_MUTEX_APPDEF #define still supported in the same manner >> from 3.5.1 to 3.5.7? (It appears that it is, but it never hurts to ask.) >> > > Yes. > > > -- > D. Richard Hipp <[EMAIL PROTECTED]> > > _______________________________________________ > sqlite-users mailing list > sqlite-users@sqlite.org > http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users > > _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
